Applying SAST to a PHP Application with Psalm's Taint Analysis

Short summary

Psalm is an open-source PHP static analysis tool that detects SQL Injection, XSS, and Path Traversal by tracking untrusted data flows through code without executing it. This tutorial demonstrates Psalm catching three OWASP Top 10 vulnerabilities in a vulnerable vehicle-workshop system, showing fixes and complete taint analysis paths. Includes a GitHub Actions workflow to automate SAST checks in CI/CD pipelines, blocking vulnerable commits before production.

• •Psalm detects SQL Injection, XSS, and Path Traversal by analyzing data flow paths through PHP code
• •Tutorial shows vulnerable code examples, remediation strategies, and Psalm's taint analysis output paths
• •GitHub Actions workflow provided to integrate security scanning into CI/CD pipelines

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